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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:30 +0000
commit76cb841cb886eef6b3bee341a2266c76578724ad (patch)
treef5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /include/sound/soc-acpi.h
parentInitial commit. (diff)
downloadlinux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz
linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip
Adding upstream version 4.19.249.upstream/4.19.249upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--include/sound/soc-acpi.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/include/sound/soc-acpi.h b/include/sound/soc-acpi.h
new file mode 100644
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+++ b/include/sound/soc-acpi.h
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+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (C) 2013-15, Intel Corporation. All rights reserved.
+ */
+
+#ifndef __LINUX_SND_SOC_ACPI_H
+#define __LINUX_SND_SOC_ACPI_H
+
+#include <linux/stddef.h>
+#include <linux/acpi.h>
+#include <linux/mod_devicetable.h>
+
+struct snd_soc_acpi_package_context {
+ char *name; /* package name */
+ int length; /* number of elements */
+ struct acpi_buffer *format;
+ struct acpi_buffer *state;
+ bool data_valid;
+};
+
+/* codec name is used in DAIs is i2c-<HID>:00 with HID being 8 chars */
+#define SND_ACPI_I2C_ID_LEN (4 + ACPI_ID_LEN + 3 + 1)
+
+#if IS_ENABLED(CONFIG_ACPI)
+bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
+ struct snd_soc_acpi_package_context *ctx);
+#else
+static inline bool
+snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
+ struct snd_soc_acpi_package_context *ctx)
+{
+ return false;
+}
+#endif
+
+/* acpi match */
+struct snd_soc_acpi_mach *
+snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines);
+
+/**
+ * snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are
+ * related to the hardware, except for the firmware and topology file names.
+ * A platform supported by legacy and Sound Open Firmware (SOF) would expose
+ * all firmware/topology related fields.
+ *
+ * @id: ACPI ID (usually the codec's) used to find a matching machine driver.
+ * @drv_name: machine driver name
+ * @fw_filename: firmware file name. Used when SOF is not enabled.
+ * @board: board name
+ * @machine_quirk: pointer to quirk, usually based on DMI information when
+ * ACPI ID alone is not sufficient, wrong or misleading
+ * @quirk_data: data used to uniquely identify a machine, usually a list of
+ * audio codecs whose presence if checked with ACPI
+ * @pdata: intended for platform data or machine specific-ops. This structure
+ * is not constant since this field may be updated at run-time
+ * @sof_fw_filename: Sound Open Firmware file name, if enabled
+ * @sof_tplg_filename: Sound Open Firmware topology file name, if enabled
+ * @asoc_plat_name: ASoC platform name, used for binding machine drivers
+ * if non NULL
+ * @new_mach_data: machine driver private data fixup
+ */
+/* Descriptor for SST ASoC machine driver */
+struct snd_soc_acpi_mach {
+ const u8 id[ACPI_ID_LEN];
+ const char *drv_name;
+ const char *fw_filename;
+ const char *board;
+ struct snd_soc_acpi_mach * (*machine_quirk)(void *arg);
+ const void *quirk_data;
+ void *pdata;
+ const char *sof_fw_filename;
+ const char *sof_tplg_filename;
+ const char *asoc_plat_name;
+ struct platform_device * (*new_mach_data)(void *pdata);
+};
+
+#define SND_SOC_ACPI_MAX_CODECS 3
+
+/**
+ * struct snd_soc_acpi_codecs: Structure to hold secondary codec information
+ * apart from the matched one, this data will be passed to the quirk function
+ * to match with the ACPI detected devices
+ *
+ * @num_codecs: number of secondary codecs used in the platform
+ * @codecs: holds the codec IDs
+ *
+ */
+struct snd_soc_acpi_codecs {
+ int num_codecs;
+ u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN];
+};
+
+/* check all codecs */
+struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg);
+
+#endif